- Scottish Prison Service
- University of Edinburgh
- National Trust for Scotland
- Ministry of Defence
- Glasgow City Council
- Midlothian Council (Midlothian Schools Ltd)
- IBM
- Govanhill Housing Association
- Allied London & Scottish Development Plc
- Clackmannanshire Council
- Fife Council
- Perth & Kinross Council
- Parkhead Housing Association
- Teesland Developments Ltd
- British Land Ltd
- Tasco Europe Ltd
- Tayside Regional Council
- Celtic Football Club
- Southside Housing Association
- Edinburgh Airport
- Strathclyde Police
- The Scottish Office
- Central Regional Council
- Aberdeen City Council
- West Dunbartonshire Council
- ST Microelectronics
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